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Virtual Wrench
Virtual Wrench, Kia Mechanic
Category: Kia
Satisfied Customers: 14618
Experience:  Over 35 years in auto repair industry
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Car jerks at around 40 mph also has to pump the gas to make

Customer Question

car jerks at around 40 mph also has to pump the gas to make car accelerate diagnostic have shown po 300/302/303. Help
Submitted: 1 year ago.
Category: Kia
Expert:  Virtual Wrench replied 1 year ago.

Hello,

Those are all misfire codes. Usually they come because of old spark plugs. Have they ever been replaced?